Business Insider: Chinese company to build world's tallest building in 90 days

Sky City in Changsha, China will beat out Dubai's Burj Khalifa by 10 meters.

This photo taken on December 26, 2011 shows a 30-story hotel building of China's Board Group under constrcution near the Dongting lake in Changsha, in central China's Hunan province. Broad Sustainable Building, the same company behind the plans for Sky City, took only 15 days to complete the hotel's construction. (STR/AFP/Getty Images)

The Burj Khalifa, currently the world's tallest building, took five years to construct.

But Broad Sustainable Building, a Chinese construction company, says it will build the world's new tallest building — the so-called Sky City in Changsha, the provincial capital of Hunan Province — in just 90 days.

If all goes as planned, the building will stand 838 meters, 10 meters higher than the Burj.

BSB plans to do the work at light-speed by using a proprietary prefabrication technique. It estimates that fabrication will take about four months at its factory, and installation will take about two months on site.